Is there a difference between 2-stroke and 4-stroke oil?
The specific operation of a 2-stroke engine requires joint combustion of the lubricant with the fuel in the combustion chamber. In addition to protecting the engine against wear, the requirements for a 2-stroke oil are to limit the appearance of exhaust fumes and to reduce the formation of carbon deposits in the combustion chamber. The HTX range 2-stroke oils possess an additive blend specifically developed to meet these requirements.
A 4-stroke oil, which is not consumed during combustion, must on the other hand conform to requirements for oil change intervals and coking resistance on the engine's hot parts. This is achieved through the development of additives whose performance, however, is incompatible with the requirements of 2-stroke engines (presence of ash).